ㅇ실기 공개 문제 첨부

ㅇ [circuit] - [2bit substrator] by Proteus 7 Professional

- 74H00  quad 2 input NAND

 RS Ratch circuit result to 13th pinn of 7483

- 74ls86 quad 2 input Exclusive OR

- 74ls83 datasheet

 A1..A4 : 10 8 3 1

 B1..B4 : 11 4 4 16

 Sum : 9 6 2

 Cin : 13

- 74ls04 hex Inverter